NHSE Subsegment / Condition Definitions

Subsegment Description

All people with a clinical diagnosis of asthma

Data Definition

All people with asthma recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment, or
• an A&E attendance

Clinical Code Usage

• 7 ICD-10 diagnosis codes
• 1 SNOMED diagnosis codes (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of atrial fibrillation

Data Definition

All people with atrial fibrillation recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment, or
• an A&E attendance

Clinical Code Usage

• 7 ICD-10 diagnosis codes
• 1 SNOMED diagnosis codes (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of bronchiectasis

Data Definition

All people with bronchiectasis recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity), or
• an outpatient appointment

Clinical Code Usage

• 2 ICD-10 diagnosis codes

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people who currently have, or had a clinical diagnosis of cancer after 2003 (excluding non-melanoma skin cancer)

Data Definition

• All people attending a specialist service for cancer since 2003, or
• All people with cancer recorded since 2003, during:
  • a hospital admission (recorded either as the reason for admission or as a co-morbidity),
  • an outpatient appointment, or
  • an A&E attendance

Clinical Code Usage

• 129 ICD-10 diagnosis codes
• 1 SNOMED diagnosis code (applied to ECDS only)
• 21 Service Line codes

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of Cerebrovascular Disease, including:

• Stroke (all ischaemic and haemorrhagic strokes, including subarachnoid haemorrhage),
• Transient Ischaemic Attack (TIA),
• Other cerebrovascular disease (including occlusion/stenosis of cerebral arteries, cerebral arteritis, and non-traumatic intracranial, subdural and extradural haemorrhage)

Data Definition

All people with Cerebrovascular Disease (CVD), as defined above, recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment, or
• an A&E attendance

Clinical Code Usage

• 92 ICD-10 diagnosis codes
• 3 SNOMED diagnosis codes (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of Chronic Kidney Disease (CKD). Includes all people with:

• CKD stages 3 – 5
• End Stage Renal Failure (ESRF), including people receiving dialysis or who have had a kidney transplant

Data Definition

All people with CKD stages 3-5 or ESRF recorded during:

• a hospital admission (recorded either as the reason for admission as a co-morbidity, or a relevant procedure such as dialysis is recorded),
• an outpatient appointment,
• an A&E attendance, or
• an attendance at a specialist service for dialysis or kidney transplant

Clinical Code Usage

• 37 ICD-10 diagnosis codes
• 54 OPCS procedure codes
• 1 SNOMED diagnosis code (applied to ECDS only)
• 3 Service Line codes
• 30 HRG codes

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of chronic liver disease (including liver cirrhosis, chronic hepatitis, and other conditions which result in irreversible liver damage), including liver failure

Data Definition

All people with chronic liver disease, as defined above, recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity, or a relevant procedure is recorded such as liver transplant),
• an outpatient appointment, or
• an attendance at a specialist service for liver transplant

Clinical Code Usage

• 63 ICD-10 diagnosis codes
• 40 OPCS procedure codes
• 1 Service Line code

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of chronic pain, or conditions which result in chronic pain. This includes:

• ankylosing spondylitis, rheumatoid arthritis, trigeminal neuralgia, fibromyalgia, chronic osteomyelitis, amongst other conditions

Data Definition

All people with chronic pain, as defined above, recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment, or
• an attendance at a specialist service for pain management

Clinical Code Usage

• 33 ICD-10 diagnosis codes
• 2 Service Line codes

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of Chronic Obstructive Pulmonary Disease (COPD)

Data Definition

All people with COPD recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment, or
• an A&E attendance

Clinical Code Usage

• 16 ICD-10 diagnosis codes
• 1 SNOMED diagnosis code (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of Coronary Heart Disease which includes

• myocardial infarction,
• angina, or
• other ischaemic heart conditions

Data Definition

All people with CHD, as defined above, recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity, or a relevant procedure is recorded such as coronary angioplasty),
• an outpatient appointment,
• an A&E attendance, or
• an attendance at a specialist myocardial infarction service
• a GP appointment (for people with diabetes in the NDA data)

Clinical Code Usage

• 44 ICD-10 diagnosis codes
• 22 OPCS procedure codes
• 4 SNOMED diagnosis codes (applied to ECDS only)
• 1 Service Line code

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of cystic fibrosis

Data Definition

All people with cystic fibrosis recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity), or
• an outpatient appointment

Clinical Code Usage

• 5 ICD-10 diagnosis codes

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of depression (or previous history of depression since 2006)

Data Definition

All people with depression recorded, since 2006, during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment,
• an A&E attendance, or
• a mental health service appointment or admission including for ‘Improving Access to Psychological Therapies’ services

Clinical Code Usage

• 15 ICD-10 diagnosis codes
• 1 SNOMED diagnosis code (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of diabetes. This includes type 1, type 2, and rare forms of diabetes, but excludes gestational diabetes

Data Definition

All people with diabetes, as defined above, recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment,
• an A&E attendance, or
• a GP appointment

Clinical Code Usage

• 65 ICD-10 diagnosis codes
• 4 SNOMED diagnosis codes (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of epilepsy

Data Definition

All people with epilepsy recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment,
• an A&E attendance, or
• a referral to community services for their epilepsy care

Clinical Code Usage

• 17 ICD-10 diagnosis codes
• 1 SNOMED diagnosis code (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of heart failure. This includes:

• Congestive heart failure, pulmonary heart disease, cardiomyopathy and left ventricular failure

Data Definition

All people with heart failure recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment, or
• an A&E attendance

Clinical Code Usage

• 13 ICD-10 diagnosis codes
• 1 SNOMED diagnosis code (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of hypertension

Data Definition

All people with hypertension recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment, or
• an A&E attendance

Clinical Code Usage

• 27 ICD-10 diagnosis codes
• 1 SNOMED diagnosis code (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of Inflammatory Bowel Disease (IBD). This includes both ulcerative colitis and Crohn’s disease

Data Definition

• An attendance at a specialist surgical service for complex IBD, or
• All people with IBD recorded during:
  • a hospital admission (recorded either as the reason for admission or as a co-morbidity), or
  • an outpatient appointment

Clinical Code Usage

• 2 ICD-10 diagnosis codes
• 1 Service Line code

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of multiple sclerosis

Data Definition

All people with multiple sclerosis recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity), or
• an outpatient appointment

Clinical Code Usage

• 1 ICD-10 diagnosis code

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of osteoarthritis

Data Definition

All people with osteoarthritis recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment, or
• an A&E attendance

Clinical Code Usage

• 40 ICD-10 diagnosis codes
• 1 SNOMED diagnosis code (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

• All people with a clinical diagnosis of osteoporosis, including fragility fractures (vertebra, neck of femur)
• All people aged 50 years and over and sustain a Colles’ fracture

Data Definition

All people with osteoporosis, or all people 50 years and over and sustain a Colles’ fracture, as defined above, recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity, or a relevant procedure is recorded),
• an outpatient appointment, or
• an A&E attendance

Clinical Code Usage

• 30 ICD-10 diagnosis codes
• 5 OPCS procedure codes
• 6 SNOMED diagnosis codes (applied to ECDS only)

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of Parkinson’s disease

Data Definition

All people with Parkinson’s disease recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment, or
• a referral to community services for their Parkinson’s care

Clinical Code Usage

• 2 ICD-10 diagnosis codes

Data Sources

For more information about each of the data sources click here

Subsegment Description

All people with a clinical diagnosis of peripheral vascular disease. This includes:

• atherosclerosis, aortic aneurysms, and other vascular and arterial disease

Data Definition

All people with peripheral vascular disease recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity, or a relevant procedure is recorded such as percutaneous transluminal insertion of stent into iliac artery), or
• an outpatient appointment

Clinical Code Usage

• 30 ICD-10 diagnosis codes
• 58 OPCS procedure codes

Data Sources

For more information about each of the data sources click here

Subsegment Description:

All people with a clinical diagnosis of pulmonary heart disease

Data Definition:

All people with pulmonary heart disease recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity), or
• an outpatient appointment

Clinical Code Usage

• 2 ICD-10 diagnosis codes

Data Sources

For more information about each of the data sources click here

Subsegment Description:

All people with a clinical diagnosis of rheumatoid arthritis

Data Definition:

All people with rheumatoid arthritis recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity), or
• an outpatient appointment

Clinical Code Usage

• 15 ICD-10 diagnosis codes

Data Sources

For more information about each of the data sources click here

Subsegment Description:

All people with a diagnosis of sarcoidosis

Data Definition:

All people with sarcoidosis recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity), or
• an outpatient appointment

Clinical Code Usage

• 9 ICD-10 diagnosis codes

Data Sources

For more information about each of the data sources click here

Subsegment Description:

All people with a clinical diagnosis of serious mental illness (SMI). This includes:

• psychotic disorders, schizophrenia, and bipolar affective disorders

Data Definition:

All people with SMI recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity),
• an outpatient appointment,
• an A&E attendance,
• a mental health service appointment or admission, including for ‘Improving Access to Psychological Therapies’ services, or
• a GP appointment (for people with diabetes in the NDA data)

Clinical Code Usage

• 57 ICD-10 diagnosis codes
• 1 SNOMED diagnosis code (applied to ECDS only)
• 8 Care Cluster codes

Data Sources

For more information about each of the data sources click here

Subsegment Description:

All people with a clinical diagnosis of sickle cell disease

Data Definition:

All people with sickle cell disease recorded during:

• a hospital admission (recorded either as the reason for admission or as a co-morbidity), or
• an outpatient appointment

Clinical Code Usage

• 3 ICD-10 diagnosis codes

Data Sources

For more information about each of the data sources click here